Wondering why my Pi VPN server (PiVPN) can only use TCP protocol but not UDP protocol

I have to make a personal VPN server using PiVPN with my Raspberry Pi 3B+ (Raspbian Jessie). I make my server according to this guide: https://www.cloudpro.co.uk/it-infrastructure/virtualization/7503/how-to-turn-a-raspberry-pi-into-a-vpn-server I follow the instruction until I met a problem. The guide says that I have to choose UDP (port 1194) to configure my server, port-forwarding the same port with…

How to execute source command in docker-compose `command`?

I want to run source in docker-compose command , like command: [“source”, “/etc/profile”, “;”, “/usr/local/tomcat/bin/catalina.sh”, “run”] the error is ERROR: for pica-cat3 Cannot start service pica-cat3: b’OCI runtime create failed: container_linux.go:346: starting container process caused “exec: \\”source\\”: executable file not found in $PATH”: unknown’ what can I do?

VM became unreachable after a peroid of quiet time, but actually it is running verified by remote console

We met a situation in our Production environment that VMs will become unreachable after a peroid of quiet time (no network packets IN or OUT). But actually they are running which I verified by the remote console through vcenter. And after we did a ping or traceroute to other resources inside of VMs, the network…

Using NFS /home directory with different distributions

I’m following Ubuntu’s official documentation for exporting and mounting NFS. This and other tutorials regularly mention exporting the /home directory and mounting it on the clients to have a central location for all the files. https://help.ubuntu.com/community/SettingUpNFSHowTo I’ve tried searching for this but I haven’t found anything that talks specifically about mounting on different clients distributions.…

Debian 10 Buster not recognizing domain name assigned by dhcp

I have two buster servers that get assigned static IPs via DHCP (dhclient). the DHCP server assigns all parameters including domain (mydomain.org). One server works fine, i.e. hostname -f. On this server /etc/resolv.conf is correct: # Generated by NetworkManager search mydomain.org nameserver x.x.x.x hostname -f on the working server returns the FQDN as it should.…